diff --git a/core/src/storage/cache.py b/core/src/storage/cache.py
index 8a3518340..0d36faa72 100644
--- a/core/src/storage/cache.py
+++ b/core/src/storage/cache.py
@@ -4,7 +4,9 @@ from micropython import const
 from typing import TYPE_CHECKING
 
 from trezor import utils
-from storage.cache_common import SESSIONLESS_FLAG, InvalidSessionError, SessionlessCache
+from storage.cache_common import InvalidSessionError, SessionlessCache
+
+SESSIONLESS_FLAG = const(128)
 
 if TYPE_CHECKING:
     from typing import Sequence, TypeVar, overload
diff --git a/core/src/storage/cache_common.py b/core/src/storage/cache_common.py
index ac160cc52..8e06768dd 100644
--- a/core/src/storage/cache_common.py
+++ b/core/src/storage/cache_common.py
@@ -1,4 +1,3 @@
-from micropython import const
 from typing import TYPE_CHECKING
 
 from trezor import utils
@@ -8,8 +7,6 @@ if TYPE_CHECKING:
 
     T = TypeVar("T")
 
-SESSIONLESS_FLAG = const(128)
-
 
 class InvalidSessionError(Exception):
     pass
@@ -30,8 +27,7 @@ class DataCache:
     if TYPE_CHECKING:
 
         @overload
-        def get(self, key: int) -> bytes | None:
-            ...
+        def get(self, key: int) -> bytes | None: ...
 
         @overload
         def get(self, key: int, default: T) -> bytes | T:  # noqa: F811